Move go.mod to Go 1.17

fixes tektoncd#4725 (sorta)

Since tektoncd#4712, we've actually required Go 1.17 to build, but
`go.mod` still was set to `go 1.16`. I noticed this because I have a hack locally that sets the Go
version in the CLI based on what's in `go.mod`, and then couldn't do `go run hack/spec-gen/main.go`.
Given that our CI is all using 1.17 and we require 1.17 to compile/build, we might as well update
`go.mod` as well.

Note that there was one quirk moving to 1.17 - running `go mod tidy` initially got:

```
github.com/tektoncd/pipeline/pkg/apis/config imports
	knative.dev/pkg/metrics imports
	contrib.go.opencensus.io/exporter/prometheus imports
	github.com/prometheus/client_golang/prometheus imports
	github.com/cespare/xxhash/v2 loaded from github.com/cespare/xxhash/v2@v2.1.1,
	but go 1.16 would select v2.1.2

To upgrade to the versions selected by go 1.16:
	go mod tidy -go=1.16 && go mod tidy -go=1.17
If reproducibility with go 1.16 is not needed:
	go mod tidy -compat=1.17
For other options, see:
	https://golang.org/doc/modules/pruning
```

I took a look, and we already had `github.com/cespare/xxhash/v2@v2.1.2` in `go.sum`, so I decided
that we should do the `go mod tidy -go=1.16 && go mod tidy -go=1.17` approach rather than the
`go mod tidy -compat=1.17` one, to keep the current version we appear to be indirectly referencing.
Also, this means that we don't need to change `hack/update-deps.sh` to have `go mod tidy -compat=1.17`,
because the `go.mod` is now fully 1.17 compatible while having the `xxhash` version we would have
expected.

Signed-off-by: Andrew Bayer <andrew.bayer@gmail.com>

Author: abayer

go.mod

@@ -1,6 +1,6 @@
 module github.com/tektoncd/pipeline
 
-go 1.16
+go 1.17
 
 require (
 	github.com/cloudevents/sdk-go/v2 v2.5.0
@@ -32,14 +32,118 @@ require (
 
 require (
 	cloud.google.com/go/compute v1.3.0 // indirect
+	contrib.go.opencensus.io/exporter/ocagent v0.7.1-0.20200907061046-05415f1de66d // indirect
+	contrib.go.opencensus.io/exporter/prometheus v0.4.0 // indirect
 	github.com/Azure/azure-sdk-for-go v61.5.0+incompatible // indirect
+	github.com/Azure/go-autorest v14.2.0+incompatible // indirect
+	github.com/Azure/go-autorest/autorest v0.11.24 // indirect
+	github.com/Azure/go-autorest/autorest/adal v0.9.18 // indirect
+	github.com/Azure/go-autorest/autorest/azure/auth v0.5.11 // indirect
+	github.com/Azure/go-autorest/autorest/azure/cli v0.4.5 // indirect
+	github.com/Azure/go-autorest/autorest/date v0.3.0 // indirect
+	github.com/Azure/go-autorest/logger v0.2.1 // indirect
+	github.com/Azure/go-autorest/tracing v0.6.0 // indirect
+	github.com/PuerkitoBio/purell v1.1.1 // indirect
+	github.com/PuerkitoBio/urlesc v0.0.0-20170810143723-de5bf2ad4578 // indirect
+	github.com/aws/aws-sdk-go-v2 v1.13.0 // indirect
+	github.com/aws/aws-sdk-go-v2/config v1.13.1 // indirect
+	github.com/aws/aws-sdk-go-v2/credentials v1.8.0 // indirect
+	github.com/aws/aws-sdk-go-v2/feature/ec2/imds v1.10.0 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/configsources v1.1.4 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/endpoints/v2 v2.2.0 // indirect
+	github.com/aws/aws-sdk-go-v2/internal/ini v1.3.5 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ecr v1.14.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/ecrpublic v1.11.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/internal/presigned-url v1.7.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sso v1.9.0 // indirect
+	github.com/aws/aws-sdk-go-v2/service/sts v1.14.0 // indirect
+	github.com/aws/smithy-go v1.10.0 // indirect
+	github.com/awslabs/amazon-ecr-credential-helper/ecr-login v0.0.0-20220216180153-3d7835abdf40 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/blang/semver/v4 v4.0.0 // indirect
+	github.com/blendle/zapdriver v1.3.1 // indirect
+	github.com/census-instrumentation/opencensus-proto v0.3.0 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/chrismellard/docker-credential-acr-env v0.0.0-20220119192733-fe33c00cee21 // indirect
+	github.com/containerd/stargz-snapshotter/estargz v0.11.0 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/dimchansky/utfbom v1.1.1 // indirect
+	github.com/docker/cli v20.10.12+incompatible // indirect
 	github.com/docker/distribution v2.8.0+incompatible // indirect
+	github.com/docker/docker v20.10.12+incompatible // indirect
+	github.com/docker/docker-credential-helpers v0.6.4 // indirect
 	github.com/emicklei/go-restful v2.15.0+incompatible // indirect
+	github.com/evanphx/json-patch v4.12.0+incompatible // indirect
+	github.com/evanphx/json-patch/v5 v5.6.0 // indirect
+	github.com/go-kit/log v0.1.0 // indirect
+	github.com/go-logfmt/logfmt v0.5.0 // indirect
+	github.com/go-logr/logr v1.2.2 // indirect
+	github.com/go-openapi/jsonpointer v0.19.5 // indirect
+	github.com/go-openapi/jsonreference v0.19.5 // indirect
+	github.com/go-openapi/swag v0.19.15 // indirect
+	github.com/gobuffalo/flect v0.2.4 // indirect
+	github.com/gogo/protobuf v1.3.2 // indirect
 	github.com/golang-jwt/jwt/v4 v4.3.0 // indirect
+	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/google/go-containerregistry/pkg/authn/kubernetes v0.0.0-20220223122423-dd8d514a9b24 // indirect
+	github.com/google/gofuzz v1.2.0 // indirect
+	github.com/googleapis/gnostic v0.5.5 // indirect
+	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
+	github.com/hashicorp/errwrap v1.0.0 // indirect
+	github.com/imdario/mergo v0.3.12 // indirect
+	github.com/jmespath/go-jmespath v0.4.0 // indirect
+	github.com/josharian/intern v1.0.0 // indirect
+	github.com/json-iterator/go v1.1.12 // indirect
+	github.com/kelseyhightower/envconfig v1.4.0 // indirect
 	github.com/klauspost/compress v1.14.4 // indirect
+	github.com/mailru/easyjson v0.7.7 // indirect
+	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
+	github.com/mitchellh/copystructure v1.0.0 // indirect
+	github.com/mitchellh/reflectwalk v1.0.1 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/opencontainers/go-digest v1.0.0 // indirect
+	github.com/openzipkin/zipkin-go v0.3.0 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/prometheus/client_golang v1.11.1 // indirect
+	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/common v0.32.1 // indirect
+	github.com/prometheus/procfs v0.6.0 // indirect
+	github.com/prometheus/statsd_exporter v0.21.0 // indirect
+	github.com/shurcooL/githubv4 v0.0.0-20190718010115-4ba037080260 // indirect
+	github.com/shurcooL/graphql v0.0.0-20181231061246-d48a9a75455f // indirect
+	github.com/sirupsen/logrus v1.8.1 // indirect
+	github.com/spf13/pflag v1.0.5 // indirect
+	github.com/stretchr/testify v1.7.0 // indirect
+	github.com/vbatts/tar-split v0.11.2 // indirect
+	go.uber.org/atomic v1.9.0 // indirect
+	go.uber.org/automaxprocs v1.4.0 // indirect
 	go.uber.org/goleak v1.1.12 // indirect
 	go.uber.org/multierr v1.7.0 // indirect
+	golang.org/x/crypto v0.0.0-20220214200702-86341886e292 // indirect
+	golang.org/x/mod v0.5.1 // indirect
+	golang.org/x/net v0.0.0-20220225172249-27dd8689420f // indirect
+	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+	golang.org/x/sys v0.0.0-20220227234510-4e6760a101f9 // indirect
+	golang.org/x/term v0.0.0-20210927222741-03fcf44c2211 // indirect
+	golang.org/x/text v0.3.7 // indirect
 	golang.org/x/time v0.0.0-20220210224613-90d013bbcef8 // indirect
+	golang.org/x/tools v0.1.9 // indirect
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
+	google.golang.org/api v0.67.0 // indirect
+	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/genproto v0.0.0-20220303160752-862486edd9cc // indirect
+	google.golang.org/grpc v1.44.0 // indirect
+	google.golang.org/protobuf v1.27.1 // indirect
+	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.4.0 // indirect
+	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
+	k8s.io/apiextensions-apiserver v0.23.4 // indirect
+	k8s.io/gengo v0.0.0-20220307231824-4627b89bbf1b // indirect
+	k8s.io/klog/v2 v2.60.1-0.20220317184644-43cc75f9ae89 // indirect
+	k8s.io/utils v0.0.0-20220210201930-3a6ce19ff2f9 // indirect
+	sigs.k8s.io/json v0.0.0-20211208200746-9f7c6b3444d2 // indirect
+	sigs.k8s.io/structured-merge-diff/v4 v4.2.1 // indirect
+	sigs.k8s.io/yaml v1.3.0 // indirect
 )